CN105081414A - Straight grooving drill bit suitable for forward and reverse machining - Google Patents
Straight grooving drill bit suitable for forward and reverse machining Download PDFInfo
- Publication number
- CN105081414A CN105081414A CN201510482643.9A CN201510482643A CN105081414A CN 105081414 A CN105081414 A CN 105081414A CN 201510482643 A CN201510482643 A CN 201510482643A CN 105081414 A CN105081414 A CN 105081414A
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- CN
- China
- Prior art keywords
- cutting edge
- machined surface
- chip area
- drillstock
- drill bit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/04—Angles, e.g. cutting angles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/20—Number of cutting edges
- B23B2251/202—Three cutting edges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/40—Flutes, i.e. chip conveying grooves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
A straight grooving drill bit suitable for forward and reverse machining comprises a chip groove, a sleeking blade, a main cutting blade, an auxiliary cutting blade and a drill handle. The two cutting blades are adopted for complete drilling together, and match each other to control the size of a drilled hole. The chip groove is adopted for removing cutting chips generated in the machining process. The sleeking blade is adopted for sleeking the surface of an inner hole. The drill bit is adopted for drilling, and has the beneficial effects that forward and reverse cutting directions are freely selected, control precision is high, the cutting chips are smoothly removed, and the inner surface of the inner hole is smooth, and the requirement of drilling is met to the largest degree.
Description
Technical field
The present invention relates to one and head straight for gouge bit, particularly a kind of be suitable for rotating processing head straight for gouge bit, belong to field of machining.
Background technology
Drilling operation is the method with drill bit machining hole on solid material, utilizes the rotation of both drill bit or material to produce a speed discrepancy, carries out drilling processing.The drilling of traditional fluted drill shapes, and mainly there is following problem:
(1) drill bit is less, manufactures and sharpening difficulty, is difficult to ensure both sides cutting edge profile and high consistency, causes aperture size wayward thus;
(2) hole diameter is less, and chip space is not enough, chip removal difficulty, and drill bit is easily squeezed off by chip;
(3) hole wall easily produces helical form lathe tool trace and chip and squeezes and hinder bore area, and the fineness of endoporus is general not high, makes product not reach designing requirement;
(4) chip is easily wrapped on cutter, is a stubborn problem for totally enclosed Digit Control Machine Tool and the processing of large batch of part;
(5) because cooling is abundant not, during batch machining, drill bit very easily weares and teares, and causes the endoporus bottom size processed to diminish.
Summary of the invention
The technical problem that the present invention solves is: overcome the deficiencies in the prior art, propose a kind of be suitable for rotating processing head straight for gouge bit, two cutting edges are adopted jointly to complete boring, two cutting edges cooperatively interact the size of keyhole, chip area is adopted to remove the chip produced in process, wiper edges is adopted to carry out smoothing to bore area, the drill bit in the present invention is utilized to hole, there is positive and negative cutting direction unrestricted choice, control accuracy be high, chip removal is smooth and easy, advantage that bore area is smooth, meet the demand of Drilling operation to the full extent.
Technology settling mode of the present invention is: a kind of be suitable for rotating processing head straight for gouge bit, comprising: chip area 1, wiper edges 2, main cutting edge 3, front cutting edge 4 and circular drillstock 5;
Described chip area 1 is a plane perpendicular with circular drillstock 5 cross section, is formed by an inside machining of end face of drillstock 5;
Described wiper edges 2 is from a limit of chip area 1, and the machined surface that edge and the angle of chip area 1 place plane are γ is processed to form;
Main cutting edge 3 is the cutting edge that main cutting edge machined surface and wiper edges machined surface are formed, and the end face that described main cutting edge machined surface remains bar after processing wiper edges 2 is processed to form, and is β with the angle of the processing plane of chip area
2, and the angle α between circular drillstock 5 end face
2;
Described front cutting edge 4 is the cutting edge that front cutting edge machined surface and wiper edges machined surface are formed, and the end face that described front cutting edge machined surface remains bar after processing main cutting edge 3 is processed to form, and is β with the angle of the machined surface of chip area
1, and the angle α between circular drillstock 5 end face
1.
Described chip area 1 and drillstock 5 circular sliding slopes.
Described chip area 1 is greater than the degree of depth of institute's machining hole along the length that the plane of the axis being parallel with drillstock 5 is inwardly processed.
Described β
2span be: 75 ° ~ 85 °, the span of α 2 is: 25 ° ~ 35 °.
Described β
2for: 80 °, α 2 is: 30 °.
Described β
1span be: 30 ° ~ 40 °, the span of α 1 is: 10 ° ~ 20 °.
Described is β
2for: 35 °, α 1 is: 15 °.
The span of described γ is: 45 ° ~ 55 °.
Described γ is: 50 °.
The present invention's beneficial effect is compared with prior art:
(1) drill bit in the present invention has chip area, can by the smooth and easy eliminating of chip of processing generation in the process of Drilling operation, avoid chip space in prior art not enough, chip removal difficulty, drill bit is easily squeezed off by chip, and chip is easily wrapped in the problem on cutter, add the security of process and the loss of part;
(2) drill bit in the present invention has wiper edges, in the process of boring, smoothing is carried out to bore area, improve the smoothness of endoporus.
Accompanying drawing explanation
Fig. 1 is the plan structure schematic diagram of drill bit in the present invention;
Fig. 2 is the end TV structure schematic diagram of drill bit in the present invention;
Fig. 3 is the main TV structure schematic diagram of drill bit in the present invention;
Fig. 4 is the left TV structure schematic diagram of drill bit in the present invention;
Fig. 5 is the backsight structural representation of drill bit in the present invention.
Detailed description of the invention
Fig. 1 is the plan structure schematic diagram of drill bit in the present invention; Fig. 2 is the end TV structure schematic diagram of drill bit in the present invention; Fig. 3 is the main TV structure schematic diagram of drill bit in the present invention; Fig. 4 is the left TV structure schematic diagram of drill bit in the present invention; Fig. 5 is the backsight structural representation of drill bit in the present invention, from Fig. 1 ~ Fig. 5, the present invention propose a kind of be suitable for rotating processing head straight for gouge bit, comprising: chip area (1), wiper edges (2), main cutting edge (3), front cutting edge (4) and circular drillstock (5);
Described chip area (1) is a plane perpendicular with circular drillstock (5) cross section, is formed by an inside machining of end face of drillstock (5); Chip area (1) and drillstock (5) circular sliding slopes, and the length that chip area (1) edge and the plane of the axis being parallel of drillstock (5) are inwardly processed is greater than the degree of depth of institute's machining hole.
Described wiper edges (2) is for from a limit of chip area (1), and the machined surface that edge and the angle of chip area (1) place plane are γ is processed to form, and the span of γ is: 45 ° ~ 55, and preferred value is: 50 °;
The cutting edge that main cutting edge (3) is formed for main cutting edge machined surface and wiper edges machined surface, the end face that described main cutting edge machined surface remains bar afterwards from processing wiper edges (2) is processed to form, and is β with the angle of the processing plane of chip area
2, and the angle α between circular drillstock (5) end face
2; β
2span be: 75 ° ~ 85 °, the span of α 2 is: 25 ° ~ 35 °, preferred value is: β
2be 80 °, α 2 is: 30 °.
The cutting edge that described front cutting edge (4) is formed for front cutting edge machined surface and wiper edges machined surface, the end face that described front cutting edge machined surface remains bar afterwards from processing main cutting edge (3) is processed to form, and is β with the angle of the machined surface of chip area
1, and the angle α between circular drillstock (5) end face
1, β
1span be: 30 ° ~ 40 °, the span of α 1 is: 10 ° ~ 20 °, preferred value is: β
2for: 35 °, α 1 is: 15.
In the present invention, the processing method of drill bit is:
(1) remove 40% of cylindrical bar diameter, form a plane, as chip area;
(2) from the side of chip area, process a wiper edges machined surface to the bar after step (1) processing, the angle of this machined surface face and chip area place plane is γ, and forms wiper edges with chip area;
(3) end face of the residue bar after step (2) processing reprocesses out a main cutting edge machined surface, and the angle of the processing plane of described plane and chip area is β
2, and the angle α 2 between cylindrical bar end face; The processing plane of this machined surface and wiper edges forms main cutting edge; Described main cutting edge machined surface deviates from the extended surface of cylindrical bar and the axes intersect of cylindrical bar;
(4) end face of the residue bar after step (3) processing reprocesses out a front cutting edge machined surface, and the angle of the processing plane of this machined surface face and chip area is β
1, and the angle α 1 between cylindrical bar end face, the processing plane of this machined surface and wiper edges forms front cutting edge, described front cutting edge machined surface towards the extended surface of cylindrical bar, with the axes intersect of cylindrical bar.
In the present invention, drill bit is applied to the processing of aperture and micro hole, or the endoporus simultaneous manufacturing that surface quality requirements is higher, can also be used for the flexible material processing that some fusing points are lower.After processing, endoporus roughness can reach more than Ra0.8.
In the present invention, drill bit can adopt high-speed tool steel and the processing of carbide alloy bi-material.Because half-round drill tool orthogonal rake is no better than 0, drilling resistance is comparatively large, is generally suitable for the processing compared with aperture.In actual production, half-round drill is generally used for processing the endoporus of aperture at Φ less than 2.6.The thickness basic controlling of half-round drill is in 50% ~ 60% of processed aperture.Hole tolerance is at more than 0.03mm, and half-round drill diameter gets the+0.01mm ~+0.02mm of aperture lower deviation; When hole tolerance is less than 0.03mm, half-round drill diameter gets the-0.01mm ~-0.02mm of aperture lower deviation.Also can by changing length and the β of main cutting edge during grinding half-round drill
1, β
2angular dimension to processing endoporus size suitably adjust.When using half-round drill processing copper material, within the machining accuracy in hole can be controlled in 0.02mm.
The efficiency that in the present invention, copper material processed by drill bit and existing fluted drill contrasts as shown in table 1, as can be seen from Figure 1, utilize the drill bit in the present invention, feed and the once maximum drilling degree of depth all improve more than 50%, processing quantity in unit interval then improves a magnitude, and roughness will significantly better than existing fluted drill.
Table 1
In this invention, drill bit changes aperture to be processed by the amount of bias changing main cutting edge and the intersection point of front cutting edge and the axis of chip area plane.As shown in Figure 1, angle beta
2constant, main cutting edge lengthens, and aperture increases; Otherwise aperture diminishes.The main cutting edge that the concrete size of drill bit in the present invention is different and front cutting edge, two cutting edges have cooperatively interacted boring, avoid existing bit size less, manufacture and sharpening difficulty, be difficult to ensure both sides cutting edge profile and high consistency, cause the uppity problem of aperture size thus, improve the precision in boring procedure.And the length of chip area and the processing plane of main cutting edge and front cutting edge all can adjust in the present invention, thus meet the requirement to different depth and different tolerance boring work, there is better engineering adaptability.
In the present invention during drill sharpening, according to the specific requirement in lathe property and drilling direction, a same charge bar can output different cutting edge directions, to meet the needs of forward or reverse.
Claims (9)
1. what be suitable for rotating processing heads straight for a gouge bit, it is characterized in that comprising: chip area (1), wiper edges (2), main cutting edge (3), front cutting edge (4) and circular drillstock (5);
Described chip area (1) is a plane perpendicular with circular drillstock (5) cross section, is formed by an inside machining of end face of drillstock (5);
Described wiper edges (2) is for from a limit of chip area (1), and the machined surface that edge and the angle of chip area (1) place plane are γ is processed to form;
The cutting edge that main cutting edge (3) is formed for main cutting edge machined surface and wiper edges machined surface, the end face that described main cutting edge machined surface remains bar afterwards from processing wiper edges (2) is processed to form, and is β with the angle of the processing plane of chip area
2, and the angle α between circular drillstock (5) end face
2;
The cutting edge that described front cutting edge (4) is formed for front cutting edge machined surface and wiper edges machined surface, the end face that described front cutting edge machined surface remains bar afterwards from processing main cutting edge (3) is processed to form, and is β with the angle of the machined surface of chip area
1, and the angle α between circular drillstock (5) end face
1.
2. according to claim 1 a kind of be suitable for rotating processing head straight for gouge bit, it is characterized in that: described chip area (1) and drillstock (5) circular sliding slopes.
3. according to claim 1 a kind of be suitable for rotating processing head straight for gouge bit, it is characterized in that: described chip area (1) along and the plane of the axis being parallel of drillstock (5) length of inwardly processing be greater than the degree of depth of institute's machining hole.
4. according to claim 1 a kind of be suitable for rotating processing head straight for gouge bit, it is characterized in that: described β
2span be: 75 ° ~ 85 °, the span of α 2 is: 25 ° ~ 35 °.
5. according to claim 4 a kind of be suitable for rotating processing head straight for gouge bit, it is characterized in that: described β
2for: 80 °, α 2 is: 30 °.
6. according to claim 1 a kind of be suitable for rotating processing head straight for gouge bit, it is characterized in that: described β
1span be: 30 ° ~ 40 °, the span of α 1 is: 10 ° ~ 20 °.
7. according to claim 6 a kind of be suitable for rotating processing head straight for gouge bit, it is characterized in that: described for β
2for: 35 °, α 1 is: 15 °.
8. according to claim 1 a kind of be suitable for rotating processing head straight for gouge bit, it is characterized in that: the span of described γ is: 45 ° ~ 55 °.
9. according to claim 8 a kind of be suitable for rotating processing head straight for gouge bit, it is characterized in that: described γ is: 50 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510482643.9A CN105081414B (en) | 2015-08-07 | 2015-08-07 | It is a kind of to head straight for gouge bit suitable for what rotating was processed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510482643.9A CN105081414B (en) | 2015-08-07 | 2015-08-07 | It is a kind of to head straight for gouge bit suitable for what rotating was processed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105081414A true CN105081414A (en) | 2015-11-25 |
| CN105081414B CN105081414B (en) | 2017-07-14 |
Family
ID=54563246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510482643.9A Active CN105081414B (en) | 2015-08-07 | 2015-08-07 | It is a kind of to head straight for gouge bit suitable for what rotating was processed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105081414B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017181558A1 (en) * | 2016-04-19 | 2017-10-26 | 深圳市金洲精工科技股份有限公司 | Semicircular drill |
| CN113618861A (en) * | 2021-08-10 | 2021-11-09 | 清远市卓悦家居实业有限公司 | Drill bit and drilling equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036430A (en) * | 1988-04-04 | 1989-10-18 | 美国弗蒙特公司 | The spade drill blade that is used for masonry and rock-boring |
| US4944640A (en) * | 1989-01-10 | 1990-07-31 | Aisan kogyo Corporation | Vertical feed type burnishing drill |
| DE10351327A1 (en) * | 2003-10-31 | 2005-06-16 | Botek Präzisionsbohrtechnik Gmbh | Drill bit sub-divided into sections has cutting edge and an associated swarf removal groove |
| DE102009032126A1 (en) * | 2009-07-08 | 2011-01-13 | Münzenmaier, Uli | Tubular shaft for deep hole drill, comprises asymmetric front portion and symmetrical rear section, where symmetrical section is formed, and tubular shaft is made both in one piece and two pieces |
| CN202137421U (en) * | 2010-12-30 | 2012-02-08 | 天津重型装备工程研究有限公司 | Over-positioning quick gang drill |
| CN202155571U (en) * | 2011-06-21 | 2012-03-07 | 无锡雨田精密工具有限公司 | Stepped flat drill |
| CN104400077A (en) * | 2014-11-27 | 2015-03-11 | 苏州阿诺精密切削技术股份有限公司 | J-shaped edge correction straight flute drill |
-
2015
- 2015-08-07 CN CN201510482643.9A patent/CN105081414B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036430A (en) * | 1988-04-04 | 1989-10-18 | 美国弗蒙特公司 | The spade drill blade that is used for masonry and rock-boring |
| US4944640A (en) * | 1989-01-10 | 1990-07-31 | Aisan kogyo Corporation | Vertical feed type burnishing drill |
| DE10351327A1 (en) * | 2003-10-31 | 2005-06-16 | Botek Präzisionsbohrtechnik Gmbh | Drill bit sub-divided into sections has cutting edge and an associated swarf removal groove |
| DE102009032126A1 (en) * | 2009-07-08 | 2011-01-13 | Münzenmaier, Uli | Tubular shaft for deep hole drill, comprises asymmetric front portion and symmetrical rear section, where symmetrical section is formed, and tubular shaft is made both in one piece and two pieces |
| CN202137421U (en) * | 2010-12-30 | 2012-02-08 | 天津重型装备工程研究有限公司 | Over-positioning quick gang drill |
| CN202155571U (en) * | 2011-06-21 | 2012-03-07 | 无锡雨田精密工具有限公司 | Stepped flat drill |
| CN104400077A (en) * | 2014-11-27 | 2015-03-11 | 苏州阿诺精密切削技术股份有限公司 | J-shaped edge correction straight flute drill |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017181558A1 (en) * | 2016-04-19 | 2017-10-26 | 深圳市金洲精工科技股份有限公司 | Semicircular drill |
| CN113618861A (en) * | 2021-08-10 | 2021-11-09 | 清远市卓悦家居实业有限公司 | Drill bit and drilling equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105081414B (en) | 2017-07-14 |
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